ACT HD Performance Street Sprung Clutch Kit w/ Flywheel

2006-2014 Subaru WRX / 2005-2009 Subaru Legacy GT

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SKU: SB11-HDSSWe price match!

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Recommended for street and race use Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle Rated at 445 ft/lbs of torque. NOTE: Subaru has incorporated 240mm clutch components into production during mid-2018MY production starting with VIN J*806877. Clutch kits and flywheels are not compatible with the revised OEM components.
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SB11-HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's Performance Street discs feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates, with increased strength and reliability.

Application Note: 240mm upgrade. Must use ACT flywheel (included in kit).


  • Feel - Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle
  • Life - Longer friction life, extended by ACT's exclusive diaphragm design
  • Quality - Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance
  • Recommended Use - Recommended for street and race use
  • ACT Difference - 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability


Part Number: SB11-HDSS
Description: HD/Perf Street Sprung
Torque Capacity (ft/lbs.): 445
Torque Capacity Over OE: 32%
Flywheel Tooth Count: 124
Disc Type: Street Disc
Spline Count: 24
Spline Size (in.): 1
Disc Diameter (in.): 9.4
Disc Diameter (mm.): 240
Pressure Plate Type: Heavy Duty
Product Weight (lbs.): 28.6
Kit Contents: SB020, 3000505, 600890, RB844, PB1004, AT90
Warranty (Product Warranty):One (1) Year from Retail Purchase

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2 customer reviews

Average rating
(based on 2 reviews)
Ease of Installation
Fit / Quality
Overall Satisfaction
  1. Slipping

    By Twrex19 September 6, 2021

    After 8 months 1st gear slips off the line and while shifting into 2nd both while going up hill. Flat or downhill is fine but the clutch is unable to hold the way to the car well pulling up hill. I definitely need to utilize this one year warranty or buy a different clutch all together

  2. Nice kit

    By Trevor May 30, 2018

    The transmission was hard to pull! However, the kit bolted right in and was fairly easy to install. I've had it on for a couple thousand miles now and I really like how it feels. It is harder to engage in first due to the light flywheel but I daily it just fine. Expect a little bit of chatter when first breaking in.

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